QUALITY

This is the general quality manipulation command. The user interface of QUALITY is firstly concerned with selecting those points in the input dataset whose quality is to be manipulated, and then with the selection operation of the operation to be performed.

Selection of points is achieved by specifying zero or more of the following keywords,

AXSEL

Selection on basis of axis value ranges

FSEL

Selection on spatial axes using info in ARD file

DATSEL

Selection on basis of data value

MAGIC

Specialised version of DATSEL which locates data values containing a "magic" value

QSEL

Select on basis of existing quality value

QUALITY supports the following operations on the selected points. Note that an operation must be selected on the command line, otherwise the error "No QUALITY operation selected" will appear.

   QUALITY IGNORE  - Sets the tempory bad quality bit,      (=IGNORE)
                     leaving the rest unaltered.
   QUALITY RESTORE - Clears the temporary bad quality bit,  (=RESTORE)
                     restoring the original quality value.
   QUALITY SET     - Sets quality to a specified value.     (=SETQUAL)
   QUALITY NOT     - Complements existing quality values.
   QUALITY AND     - ANDs existing quality with specified
                     value.
   QUALITY OR      - ORs existing quality with specified
                     value.
   QUALITY EOR     - EORs existing quality with specified
                     value.

• OverWriting
• Parameters
• Auxilliary Input
• Examples
• Quality values
• Range Selection
• ShortForms
• Spatial files